Mccall Saltzman - Principal Software Engineer at Microsoft

Mccall Saltzman

Principal Software Engineer at Microsoft

Greater Seattle Area United States

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Summary

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Rockstar

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Top School

Mccall Saltzman is a Principal Software Engineer based in the Greater Seattle Area with nine years of progressive experience building and optimizing compilers and low-code platforms at Microsoft. As tech lead on the Power Fx team he drives architecture and feature work for a high-profile open-source low-code language (microsoft/Power-Fx), contributing core back-end features like option set support, improved type handling, and performance fixes. He previously owned large portions of the type system and code generation for PowerApps, improving compiler and runtime performance and test infrastructure. Early research internships at IBM gave him a strong systems and compiler background, including LLVM and CGRA simulation work, which informs his pragmatic approach to complex codegen problems. Colleagues rely on him for balancing long-term architectural decisions with shipping customer-facing improvements, and he combines rigorous CS foundations (RPI, 3.8 GPA) with hands-on delivery across the full compiler stack.

5 years of coding experience

6 years of employment as a software developer

Bachelor of Science (B.S.), Computer Science, 3.8/4.0, Bachelor of Science (B.S.), Computer Science, 3.8/4.0 at Rensselaer Polytechnic Institute

The Masters School

Github Skills (8)

csharp10

pfx10

dotnet-core10

testing9

data-structure9

develop9

data-structures9

algorithms8

Programming languages (1)

Github contributions (5)

microsoft/Power-Fx

Nov 2021 - Jan 2023

Power Fx low-code programming language

Role in this project:

Back-end Developer

Contributions:1424 reviews, 138 commits, 283 PRs in 1 year 2 months

Contributions summary:Mccall contributed to the Power Fx low-code programming language by implementing critical features and making various code modifications. This included snapping code from the staging branch, moving tests to the PowerFx repo, and adding support for display names for record and table parameters. They also worked on fixing bugs related to invalid operation exceptions and made improvements to the argument expansion for the FirstN/LastN functions. Furthermore, the user contributed to implementing option set support and improved data type management.

low-codeprosecompilerpowermicrosoft

microsoft/PowerApps-Tooling

Aug 2020 - Sep 2022

Tooling support for PowerApps language and .msapp files

Contributions:6 releases, 161 reviews, 164 commits in 2 years 1 month

windows-formsvisualstudiopowerappstoolingcanvas

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